Mounting device for concrete wall structures and the like



1933- A. H. SCHAFFERT 1,924,384

MOUNTING DEVICE FOR CONCRETE WALL STRUCTURES AND THE LIKE Filed April25, 1931 2 Sheets-Sheet l 1933- A. H. SCHAFFERT 1,924,884

MOUNTING DEVICE FOR CONCRETE WALL STRUCTURES AND THE LIKE FiledApril 25,1931 2 Sheets-Sheet 2 a Q N R Patented Aug. 29, 1933 UNE'EEE) STATESPATENT MOUNTING DEVICE FOR CONCRETE WALL STRUCTURES AND THE LIKEApplication April 25, 1931. Serial No. 532,924

' 5 Claims. (01. 72-105).

In the so-called inserts that areembedded in concrete walls and areemployed for mounting structural items or units on the walls after theirproduction, much trouble is experienced. in adjusting the holdingelements of such inserts with respect to one another, so that theattached article can be properly mounted on and secured thereby.

The object of the present invention is to provide a structure of thistype in which the mounting element can be adjusted in the insert andpositively fixed, and the article to be supported can afterwards beplaced in position and secured without the necessity of loosening oraffecting the mounting of the holding device.

In the accompanying drawings:

Figure 1 is a view in elevation of a portion of a concrete wall, showinga plurality of inserts constructed in accordance with the presentinvention mounted therein.

Figure 2 is a vertical sectional view throughone of the inserts in placeand on an enlarged scale, and illustrating an angle bar mounted o theconcrete wall thereby.

Figure 8 is a sectional View on the line 3 of Figure 2, but showing thestructure free of the wall. 7

Figure l is a front elevation with the stud in section.

Figure 5 is a vertical sectional view through the main box member.

Figure 6 is a similar View of the light metal case for said box member.

Figure 7 is a perspective view of said casing element.

Figure 8 is a perspective view of the main body.

Figure 9 is a detail perspective view of the anchor head.

In the embodiment disclosed, a box is employed that is embedded in theconcrete in a well known manner, so that its front face is flush orsubstantially fiush with the face of the wall. This box member, asshown, consists of a main body generally U-shape in cross section and ofrelatively heavy metal. It comprises a front wall 10, side walls 11 andrearwardly and outwardly flared anchor loops 12. The front wall 10 isprovided with a longitudinal slot 13, and on opposite sides of saidslot, and on the rear face of the .wall are serrations 14 that extendsubstantially the length of the slot 13. The box is completed by acasing element of lighter gauge material than the main body andcomprises a rear wall 15,

a top wall 16 and a bottom wall 17, this casing element fitting betweenthe side walls 11 and constituting a complete rear and top and bottom Cclosure for the box. The walls 16 and 1'7 terminate at their front edgesin'olfset flanges 18 and 19 that extend beyond the ends of the frontwall 10. Ears 20, struck from the top and bottom walls 16 and 17,constitute abutments for positioning the casing, and the flanges 18 and19, preferably are notched, as shown at 21, to receive nails that canbedriven into the form for holding the box inplace prior to the pouring ofthe concrete. secured to the body element by having the edges of therear wall 15 Welded to the rear portions 1 the side walls 11, as shownat 22 in Figures 2 and 3.

It will be understood that these boxes are initially and temporarilysecured to the inner faces of the forms prior to the pouring of theconcrete and when the concrete is poured, it will surround the box,leaving the front face of the front wall substantially flush with'thewall, while the loops FFICE 1 The casing element 15 is preferably 1 2,being embedded in and surroundedby the concrete, will-effectively holdthe box in place.

For the purpose of attaching articles, such as shelves, angle bars andthe like, the following structure is employed. A stud 23 is provided foreach box and has its ends threaded, as shown at 24 and 25. This stud ispassed through the slot 13 and screwed on the rear threaded portion 24,within the box, is an anchor head 26 provided with a serrated front face27 that interfits with the serrations 14 on the rear of the front wall10. The stud 23 has a firm bearing against the rear wall 15 of the boxand by rotating it, it will be evident that the head 26 will be causedto interlock with the front wall 11 so proper adjustment and fixing ofthe stud prior to the application of the article to be fastened by it,which is an important factor in mounting such articles. For example,assuming a beam or angle bar of ten or more feet is to be mounted on aconcrete wall, a set of these boxes is embedded inthe wall, as indicatedin Figure 1, the proper position of the end studs is found, a line ismounted on said end studs, and'the intermediate. studs can then beadjusted to such line, after which the article, as for example, an anglebar 30, shown in Figure 2 can be placed on the studs and secured by thenuts 28. This greatly simplifies and makes accurate the mounting of suchparts, and overcomes a serious difiiculty where it is necessary to firstplace the article, as 31 on the studs and then adjust and fasten them.

From the foregoing, it is thought that the construction, operation andmany advantages of the herein described invention will be apparent tothose skilled in the art without further description, and it will beunderstood that Various changes in the size, shape, proportion and minordetails of construction may be resorted to without departing from thespirit or sacrificing any of the advantages of the invention.Furthermore it may be used in various locations, and not only in sidewalls, but in ceilings also.

What I claim, is:

1. In means for mounting structural members on concrete structures, aboxing for embedment in the concrete or the like, said boxing having abacking wall and a front wall that is open, a holding and supportingstud that passes through and is adjustable in the front wall and abutsthe back wall, an anchoring head adjustably mounted on the rear portionof the stud within the boxing and having an adjustable holdingengagement with the rear side of the front wall when the stud abuts therear wall, and a head for clamping a structural element between it andthe front wall of the boxing, said head being adjustably mounted on thefront portion of the stud that projects beyond the boxing and movablethereon sufiicient for clamping the structural element in place.

2. A boxing for embedment in the concrete or the like, having a rearwall, a front wall having an elongated slot therein and serrations alongthe slot, a stud that passes through the slot and projects outside theboxing, said stud having its ends threaded, an anchoring head threadedon the portion of the stud within the box andhavingc portions thatinterfit the serrations, the stud being movable through said head whenso interfitted to bear against the rear wall, and a clamping nutadjustably threaded on the projecting end of the stud and through whichthe stud extends, said nut operating to clamp a structural elementagainst the wall.

3. A box for embedment in concrete or the like having an open front, astud that passes through the open front into the box and also projectstherefrom, said stud being transversely adjustable in the box, means forpositively anchoring the stud against movement in the box, and meansadjustably'mounted on the projecting end of the stud and having amovement thereon toward and from the front wall of the box for clampinga structural member thereon after its position has been fixed by theanchoring means.

4. The combination with a concrete or like wall, of a plurality of boxesembedded therein and having outer open sides, studs extending into andprojecting outside the boxes and laterally adjustable therein, means inthe boxes for fixing the studs against movement and in adjusted relationin their respective boxes, and devices adjustably mounted on theprojecting ends of the studs for securing behind them an article theretoafter said studs have been fixed.

5. A means for mounting structural units in concrete and the like wallsincluding a box having a substantially U-shaped body providing a frontand side walls, the front wall having an opening and the side wallshaving flared loops attached to their corners and forming anchors,a'second substantially U-shaped back member that interfits with the bodymember between the side walls in advance of the anchor loops and forms atop, a bottom and a rear wall, an article holding device that enters theopening in the front wall, and means in the box for fixedly securing theholding device in place.

ADOLF H. -SCHAFFERT.

